Acoustic HVAC control system
US6439468B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 19, 2001 |
| Grant date | Aug 27, 2002 |
| Priority date | — |
| Expiry date | Jul 19, 2021 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02B30/70
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
The present invention is directed to a system for acoustically controlling an automotive or aircraft vehicle's automatic climate control system. The acoustic HVAC control system determines an average air temperature using an ultrasonic transducer. The transducer transmits and receives an ultrasonic pulse along a pre-selected path within the vehicle's interior and concurrently measures the interval time between sending and receiving the pulse. An average air temperature is calculated based on the interval time. The determined average air temperature is evaluated against a pre-selected setpoint temperature and determines whether the vehicle's automatic climate control system controller controls an air blower fan speed, discharge temperature, and air delivery mode to the cabin to adjust the vehicle's interior air temperature near an occupant to a desired temperature. The average air velocity along the pre-selected path can also be determined from the difference in interval times for ultrasonic pulses traveling in opposite directions along the pre-selected path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.